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Strategies for constructing seven-membered rings:Applications in natural product synthesis

Chinese Chemical Letters 2024年第6期35卷 53-70页

作者： Peng Chen Lijuan Liang Yufei Zhu Zhimin Xing Zhenhua Jia Teck-Peng Loh College of Advanced Interdisciplinary Science and Technology Henan University of TechnologyZhengzhou 450001China Division of Chemistry and Biological Chemistry School of Chemistry Chemical Engineeringand BiotechnologyNanyang Technological UniversitySingapore 637371Singapore Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech UniversityNanjing 211816China State Key Laboratory of Applied Organic Chemistry Department of ChemistryLanzhou UniversityLanzhou 730000China

The seven-membered ring motifs are found in bioactive pharmaceuticals and a wide range of natural products,including alkaloids and terpenoids,which hold significant importance in synthetic chemistry and has garnered considerable attention from both academia and *** the challenges faced in the past decade,the total synthesis of natural products incorporating the non-aromatic cycloheptane skeletons remains a compelling ***,numerous elegant strategies for constructing the sevenmembered ring system have been successfully *** review focuses on the recent advancements in this field from 2017 to April 2023,highlighting key transformations utilized to construct the non-aromatic cycloheptane core structures and serves as a valuable guide for synthetic chemists engaged in the total synthesis of natural products containing seven-membered ring motifs.

关键词： seven-membered rings Total synthesis Natural products Synthetic strategy Cycloheptane

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Progress in organocatalytic asymmetric (4+3) cycloadditions for the enantioselective construction of seven-membered rings

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Science China Chemistry 2023年第4期66卷 966-992页

作者： Wei Tan Jia-Yi Zhang Cong-Hui Gao Feng Shi Research Center of Chiral Functional Heterocycles School of Chemistry and Materials ScienceJiangsu Normal UniversityXuzhou 221116China School of Petrochemical Engineering Changzhou UniversityChangzhou 213164China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

Chiral seven-membered ring systems such as seven-membered carbocycles and heterocycles are widely found in natural products and ***,the catalytic enantioselective construction of such frameworks has evoked considerable interest in the field of *** the various approaches,organocatalytic asymmetric(4+3)cycloadditions are highly effective for the enantioselective construction of seven-membered *** the past two decades,substantial efforts have been devoted to this field and chemists have developed various organocatalytic asymmetric(4+3)*** review summarizes the progress in organocatalytic asymmetric(4+3)cycloadditions from 2003 to early 2022 and provides insights into challenging issues faced in this research field,enabling the future development of this field.

关键词： organocatalysis (4+3)cycloaddition seven-membered rings four-atom building blocks

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